JP5684191B2 - Cylinder valve and faucet device - Google Patents

Description

  The present invention relates to a cylinder valve and a faucet device using the cylinder valve.

  A cylinder valve disclosed in Japanese Patent No. 4045865 is known. Hereinafter, this cylinder valve will be briefly described. The code | symbol of each part corresponds with the thing as described in the said gazette. This cylinder valve includes a substantially cylindrical valve body 4 having a water passage opening 4A and a substantially cylindrical valve guide 2 having a water passage opening 2A. The valve body 4 is inserted into the valve guide 2 so as to be coaxial and relatively rotatable. By the relative rotation of the valve body 4 with respect to the valve guide 2, the communication between the opening 4 </ b> A and the opening 2 </ b> A is adjusted, the communication degree is adjusted (the flow rate is adjusted), and the communication is closed. A seal member 5 and a presser member 6 are attached to the periphery of the opening 2 </ b> A of the valve guide 2.

  The seal member 5 is in sliding contact with the outer peripheral surface of the valve body 4 by the pressing member 6 at the periphery of the opening 2A. Therefore, at the time of the relative rotation, the operation load of the valve body 4 is large and the operability may be deteriorated. As the slidable contact portion of the seal member 5 with the outer peripheral surface of the valve body 4, there are an orthogonal portion in a direction (axial direction) substantially orthogonal to the relative rotation direction and a parallel portion extending in a substantially relative rotation direction (circumferential direction). To do. At the time of relative rotation, there is a possibility that the orthogonal part is caught on the peripheral corner part of the opening 4A. As a result, the seal member 5 or the like may be damaged. Moreover, since the operation load temporarily increases when this catching occurs, the rotation operation is not smooth. These problems can be further exacerbated, particularly when the valve or faucet device incorporating the valve is in use after being unused for long periods of time.

  Since this cylinder valve stops and passes water by the relative rotation of the valve guide 2 and the valve body 4, the load on both the members 2 and 4 is large in the water stop state. Damage is likely to occur between both members and / or their peripheral members. The cylinder valve has an integrated flow rate adjusting operation unit and a water discharge operation unit. When this cylinder valve is used as a flow rate adjustment operation unit for a faucet provided with a water discharge operation unit and a flow rate adjustment operation unit separately, water can be stopped at two operation units. End up. As a result, for example, even if the water discharge operation is performed with the water discharge operation unit in a state where the water flow is adjusted with the flow rate adjustment operation unit, the water cannot be passed and the usability is poor.

Japanese Patent No. 4045865

  The present invention has been made in view of the above-described situation, and an object of the present invention is to provide a cylinder valve and a faucet device that are easy to use such as a smooth operation and have little damage to an operation unit.

A preferred cylinder valve according to the present invention is:
One or more first first surfaces having a first outer surface on the outside, a cylindrical first inner surface defining a first inner space on the inner side, and communicating the first outer surface and the first inner surface. A flow control guide having holes;
One or more second holes having a cylindrical second outer peripheral surface on the outer side, a second inner side surface defining a second inner space on the inner side, and communicating the second outer peripheral surface and the second inner side surface. A flow regulating body having
At least a part of the flow regulating body is inserted into the first internal space of the flow regulating guide,
One of the flow control valve guide and the flow control valve body is rotated relative to the other to adjust the overlap area of the first hole and the second hole, thereby adjusting the flow control valve guide. A cylinder valve configured to adjust the flow rate of the liquid flowing between the outside of the flow control valve and the second internal space of the flow regulating valve,
At any rotational position of the relative rotation, a flow path through which liquid can flow between the first hole and the second hole is formed.

Preferably, by the relative rotation, a first inner opening constituting an opening portion on the first inner peripheral surface side of the first hole and a second outer opening constituting an opening portion on the second outer peripheral surface side of the second hole. Can be non-overlapping,
In this state, a gap exists between the first inner peripheral surface and the second outer peripheral surface from the first inner opening to the second outer opening, and this gap forms the flow path.

Preferably, an annular seal member for sealing the gap in a liquid-tight manner is attached to the gap between the first inner peripheral surface and the second outer peripheral surface,
The seal member is disposed on both sides of the first hole and the second hole in the axial direction, and extends in the rotation direction of the relative rotation.
There is no seal member in the gap in the axial range of the first inner opening and the second outer opening.

Preferably, a central flow path communicating with the second internal space and the outside of the flow regulating body and extending in the axial direction of the second internal space;
A pressure reducing valve member arranged in the central flow path and movable in the axial direction;
The liquid flows in from the first inner opening and is configured to flow out to the side opposite to the second internal space of the central flow path,
When the pressure on the downstream side of the pressure reducing valve member becomes higher than the set pressure, the pressure reducing valve member moves in the direction of closing the central flow path or the pressure on the downstream side of the pressure reducing valve member increases. The central channel is configured to move in the direction of decreasing the channel area.

A preferred faucet device according to the present invention is:
A liquid amount adjusting cylinder valve installed in the liquid flow path and capable of adjusting the liquid amount;
A faucet device provided on the downstream side of the flow rate adjusting cylinder valve in the liquid flow path and having a water stop / water flow switching mechanism capable of opening and closing,
The liquid amount adjusting cylinder valve is constituted by any one of the cylinder valves described above.

  The cylinder valve according to the present invention is smoother in operation than the conventional product, and the operation part is less damaged. In addition to the above advantages, the faucet device according to the present invention is easy to use such as water discharge operation.

FIG. 1 is a perspective view after assembly showing a cylinder valve according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the cylinder valve of FIG. 1 shown together with the piping. FIG. 3 is a perspective view of the cylinder valve of FIG. 1 before assembly. FIG. 4 is a front view of the cylinder valve of FIG. 5A is a partially cutaway front view of a flow control valve guide that is a part of the cylinder valve of FIG. 1, and FIG. 5B is a plan view of the flow control guide. (C) is a left side view of the flow control valve guide (viewed from the upstream side), and FIG. 5 (d) is a right side view of the flow control valve guide (viewed from the downstream side). 6 (a) is a partially cutaway front view of a flow valve body that is a part of the cylinder valve of FIG. 1, and FIG. 6 (b) is a plan view of the flow valve body. (C) is a left side view (viewed from the upstream side) of the flow valve body, and FIG. 6 (d) is a right side view (viewed from the downstream side) of the flow valve body. 7 (a), 7 (b), and 7 (c) each show an example of a mode when the cylinder valve of FIG. 1 is operated, and are sectional views taken along line VII-VII in FIG. It is. FIG. 8A is a longitudinal sectional view taken along line VIII-VIII in FIG. 8D, showing an inlet side case which is a part of the cylinder valve in FIG. 1, and FIG. 8C is a plan view of the side case, FIG. 8C is a left side view of the inlet side case (viewed from the upstream side), and FIG. 8D is a right side view of the inlet side case (downstream side). Figure seen from). FIG. 9A is a front view of a pressure reducing valve member that is a part of the cylinder valve of FIG. 1, and FIG. 9B is a partially cutaway plan view of the pressure reducing valve member. ) Is a left side view of the pressure reducing valve member (viewed from the upstream side), and FIG. 9D is a right side view of the pressure reducing valve member (viewed from the downstream side). 10 (a), 10 (b), and 10 (c) are longitudinal sectional views showing an example of the mode of the pressure reducing valve member in the cylinder valve of FIG. FIG. 11 is a piping diagram schematically showing an example of a faucet device in which the cylinder valve of FIG. 1 is used.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  1 to 4 show a cylinder valve 1 according to an embodiment of the present invention. The cylinder valve 1 is capable of adjusting the flow rate of the liquid flowing through the pipe line. The cylinder valve 1 cannot be closed by operation, but automatically closes when the downstream pressure becomes a predetermined value or more. Here, in each of FIGS. 1 to 4, the left side in the figure is referred to as the upstream side (primary side) of the liquid flow, and the right side is referred to as the downstream side (secondary side). Here, the central axis direction of the cylinder valve 1 is referred to as “axial direction”. The liquid may be water, hot water, mixed water in which various liquid agents are mixed in advance, or the like.

  As is apparent mainly from FIGS. 2 and 3, the cylinder valve 1 includes an inlet side case 3 and an outlet side case 4 which are connected to each other to form a case 2. Inside the case 2 are a flow rate adjusting valve body (hereinafter referred to as a flow control valve body) 5, a flow control valve guide 6 for guiding the rotation of the flow control body 5, a pressure reducing valve member 7, and a check valve. The body 8 is attached. The flow regulating valve 5 and the flow regulating guide 6 constitute a flow rate regulating valve (hereinafter referred to as a flow regulating valve) 9. The flow rate is adjusted by rotating the dial 98 for operating the flow regulating valve 5. The cylinder valve 1 is attached to the pipe 100. The pipe 100 includes a main pipe 101, a water supply pipe 102 connected directly to the main pipe 101, and an air communication pipe 103 connected directly to the main pipe 101. The atmosphere communication pipe 103 is substantially open to the atmosphere. The cylinder valve 1 is inserted into the main pipe 101 from the end opening 104 on the connection side of the water supply pipe 102. The main pipe 101 and the cylinder valve 1 may be provided with a rotation prevention mechanism using a projecting piece 44 formed on the case 2 (inlet side case 3) in order to prevent the main pipe 101 from rotating about its axis. . O-rings 93 and 94 are attached to the outer peripheral surface of the case 2 as seal members in order to liquid-tightly seal with the inner peripheral surface of the pipe 100. The arrangement of the O-rings 93 and 94 will be described later.

  On the downstream side of the main communication pipe 103 from the atmosphere communication pipe 103, a step part 101S is provided to reduce the diameter from the large diameter part to the small diameter part. The stepped portion 101 </ b> S abuts the downstream end of the outlet side case 4, thereby achieving an axial positioning action of the outlet side case 4, and thus an axial positioning action of the cylinder valve 1. The configuration for this positioning action is not limited to the step portion 101S. For example, a locking projection may be formed on at least a part of the inside of the main pipe 101. In short, any configuration that can be positioned by contacting the downstream end of the outlet side case 4 may be used.

  As apparent from FIG. 5 as well, the flow control valve guide 6 includes a substantially cylindrical first large diameter portion 12 located on the upstream side and a substantially cylindrical first small diameter located on the downstream side. Part (nipple part) 13 so as to be aligned in the axial direction. The first large diameter portion 12 and the first small diameter portion 13 are integrally formed. Both the upstream end of the first large diameter portion 12 and the downstream end of the first small diameter portion 13 are opened. A reducer portion 16 is formed between the first large diameter portion 12 and the first small diameter portion 13 so that the inner diameter and the outer diameter gradually decrease toward the downstream side. The first small diameter portion 13 has a first small diameter internal space 14.

  The first large-diameter portion 12 has a first outer surface 17 on the outer side and a cylindrical first inner peripheral surface 19 that defines a first large-diameter inner space 18 on the inner side. The first small-diameter internal space 14 and the first large-diameter internal space 18 communicate with each other to form a first internal space. The first large-diameter portion 12 has a first hole 20 as a flow path that communicates the first large-diameter inner space 18 and the outside, that is, communicates the first outer surface 17 and the first inner peripheral surface 19. A plurality are formed. An opening on the first outer surface 17 side of the first hole 20 constitutes a first outer opening 21, and an opening on the first inner peripheral surface 19 side constitutes a first inner opening 22. The axial position of the first outer opening 21 substantially coincides with the axial position of a third inner opening 42 of the inlet side case 3 described later. The axial position of the first inner opening 22 substantially coincides with the axial position of the second outer opening 31 of the flow regulating valve 5 described later.

  A first groove 23 extending in the circumferential direction is formed in the first outer surface 17 of the first large diameter portion 12. The first groove 23 is formed in a range including the first outer opening 21 and a third inner opening 42 of the inlet side case 3 described later in the axial direction. In other words, the first outer opening 21 is formed at the bottom of the first groove 23. The first groove 23 constitutes a flow path. The liquid flowing in from the water supply pipe 102 can easily reach each of the plurality of first holes 20 by passing through the first groove 23.

  As is apparent when referring also to FIG. 6, the flow control valve body 5 includes a rotary operation knob 24, a substantially cylindrical second small diameter portion 29, and a substantially cylindrical second large diameter portion 25. Are arranged in the axial direction. The knob 24, the second small diameter portion 29, and the second large diameter portion 25 are integrally formed. The second large diameter portion 25 has a cylindrical second outer peripheral surface 26 on the outer side, and has a second inner side surface 28 that defines a second internal space 27 on the inner side. The upstream end of the second small diameter portion 29 is closed by the proximal end portion of the knob portion 24. The downstream end of the second large diameter portion 25 is opened. The second large-diameter portion 25 is formed with a plurality of second holes 30 as flow paths that communicate the second inner space 27 and the outside, that is, the second outer peripheral surface 26 and the second inner surface 28. Has been. An opening on the second outer peripheral surface 26 side of the second hole 30 constitutes a second outer opening 31. The axial position of the second outer opening 31 substantially coincides with the axial position of the first inner opening 22 of the first hole 20 described above.

  The flow regulating valve 5 has a second large diameter portion 25 inserted into the first large diameter internal space 18 of the flow regulating valve guide 6 from the upstream opening thereof. The second large diameter portion 25 is coaxial and rotatable about the axis with respect to the first large diameter portion 12. In the present embodiment, the flow control valve guide 6 is in a state of being fixed to the inlet side case 3, and the flow control valve body 5 is configured to be rotated. However, the configuration is not limited thereto. The flow control valve 5 may be fixed and the flow control guide 6 may be configured to be rotated with respect to the flow control valve 5. The flow regulating valve 5 is positioned in the axial direction with respect to the inlet case 3 by a C-ring 97 described later.

  With reference to FIG. 7 as well, the configuration of the flow control valve 9 and the flow rate adjusting function thereof will be described below. In FIG. 7, the flow of the liquid is indicated by an arrow F. The knob 24 of the flow regulating valve 5 protrudes from the first large diameter portion 12 to the outside. The knob 24 is a part for rotating the flow regulating valve 5 around its central axis. The aforementioned operation dial 98 is attached to the knob 24. The degree of communication between the first hole 20 and the second hole 30 is changed by the flow regulating body 5 rotating relative to the flow regulating guide 6 around the axis. Thereby, the flow volume of the liquid which flows through both the holes 20 and 30 can be adjusted. That is, the area of the flow path can be adjusted by changing the overlapping area of the second outer opening 31 of the flow control valve body 5 and the first inner opening 22 of the flow control valve guide 6. The positions of the first hole 20 of the flow control valve guide 6 and the third hole 40 described later of the inlet side case 3 are not displaced. FIG. 7A shows a state where the first inner opening 22 and the second outer opening 31 are completely overlapped (fully opened state). FIG. 7B shows a state where the openings 22 and 31 are partially overlapped (intermediate opening state). FIG. 7C shows a state where the openings 22 and 31 do not overlap at all (minimum opening state). As described above, the flow control valve 5 is inserted into and integrated with the flow control guide 6 so as to be relatively rotatable about the axis, thereby forming the flow control valve 9. The first hole 20 and the second hole 30 constitute a flow rate adjusting unit of the flow control valve 9.

  The number of each of the first holes 20 and the second holes 30 may be one, but it is preferable that a plurality of the first holes 20 and the second holes 30 are formed in the circumferential direction. This is because it is easy to obtain a balance of the radial pressing force between the flow regulating body 5 and the flow regulating guide 6 due to the pressure of the liquid. From this point of view, the holes 20 and 30 are preferably arranged at equal intervals in the circumferential direction. If the number is too large, the manufacturing cost may increase, and the adjustment angle range by the rotation operation of the flow regulating body 5 becomes narrow, so the number should be two. As shown in FIG. 7, in the case of two as in this embodiment, the maximum rotation operation angle α of the flow regulating valve 5 for flow rate adjustment is 90 °. In FIG. 7, this maximum rotation operation angle α is indicated by the rotation operation start position as the maximum opening position SP of the flow control valve 9. The maximum rotation operation angle α is physically defined by a mutual circumferential locking mechanism (operation angle limiting mechanism) between the flow control valve body 5 and the inlet case 3 described later.

  The plan view shape of the first hole 20 and the second hole 30 and the plan view shape of at least the first inner opening 22 and the second outer opening 31 are not limited, and may be a polygon including an oblong shape, an oval shape, or the like. Good. In the present embodiment, as shown in FIGS. 5B and 6B, a generally rectangular shape is employed. Further, the maximum opening area of the flow rate adjusting portion of the flow control valve 9, that is, the flow path area when the first inner opening 22 and the second outer opening 31 completely overlap (FIG. 7 (a)) is the cylinder area. The minimum area (throttle portion) of the flow path in the valve 1 is set. That is, the area of the third hole 40 of the inlet side case 3 to be described later, the flow area of the first small diameter internal space 14 of the first small diameter part 13 of the flow control valve guide 6, the window 69 of the pressure reducing valve member 7 to be described later. It is smaller than the flow path area. This is because when the maximum opening area of the flow rate adjusting portion of the flow control valve 9 is not the smallest of the flow paths in the cylinder valve 1, adjustment on the large flow rate side of the flow rate adjusting portion becomes impossible.

  As shown in FIGS. 2 and 7, a gap 11 through which liquid can flow is provided between the first inner peripheral surface 19 of the flow control valve guide 6 and the second outer peripheral surface 26 of the flow control valve body 5. Is formed. This is because the flow control valve 9 is secured at any flow rate adjustment position so that the flow path is secured and is not fully closed, and the flow rate cannot be made zero. That is, even when the first inner opening 22 and the second outer opening 31 do not overlap with each other, the gap 11 forms a circumferential flow path that communicates at least the first inner opening 22 and the second outer opening 31. The Consider a faucet device in which the cylinder valve 1 and a water stop device such as an on-off valve are connected to the main pipe 101 together. In this faucet device, since the cylinder valve 1 does not have a water stop function, the water stop operation can be performed by a downstream water stop device. Therefore, this faucet device is not as inconvenient as the above-described conventional faucet device capable of stopping water at two operation portions. A water stop device may be installed on the upstream side of the cylinder valve 1 and the water stop operation may be performed with this water stop device. However, it is preferable to install a water stop on the downstream side of the cylinder valve 1 and perform a water stop operation with this water stop.

  The gap 11 is preferably 0.05 mm or more and 0.30 mm or less. If the gap 11 is less than 0.05 mm, when the flow control valve 9 is adjusted to a position where the first inner opening 22 and the second outer opening 31 do not overlap, a large pressure loss in the gap 11 causes a gap. 11 may not be a flow path and may stop water. Accordingly, the gap 11 is more preferably 0.08 mm or more, and particularly preferably 0.10 mm or more. On the other hand, if the gap 11 is larger than 0.30 mm, the flow path area becomes large, and it becomes difficult to reduce the minimum flow rate value to a desired level. That is, the flow rate adjustment range which is the performance of the flow control valve 9 is narrowed. Accordingly, the gap 11 is more preferably 0.20 mm or less, and particularly preferably 0.15 mm or less. In the present embodiment, the gap 11 is 0.12 mm.

  In order to ensure the gap 11, the difference between the inner diameter of the first inner peripheral surface 19 and the outer diameter of the second outer peripheral surface 26 is preferably 0.10 mm or more and 0.60 mm or less. If the difference in diameter is less than 0.10 mm, there is a possibility that the minimum gap 11 of 0.05 mm described above cannot be ensured. Therefore, the difference in diameter is more preferably 0.16 mm or more, and particularly preferably 0.20 mm or more. On the other hand, if the difference in diameter is larger than 0.60 mm, the flow path area of the gap 11 increases, and it becomes difficult to reduce the minimum flow rate value to a desired level. That is, the flow rate adjustment range which is the performance of the flow control valve 9 is narrowed. Therefore, the difference in diameter is more preferably 0.40 mm or less, and particularly preferably 0.30 mm or less. In this embodiment, the diameter difference is 0.24 mm. As will be described later, an O-ring 91 is mounted between the first inner peripheral surface 19 and the second outer peripheral surface 26. Due to the presence of the O-ring 91, the relative eccentricity between the flow adjustment guide 6 and the flow adjustment valve body 5 is suppressed, and fluctuations in the gap 11 are suppressed. That is, the gap 11 is ensured over the entire circumference between the first inner peripheral surface 19 and the second outer peripheral surface 26.

  In the present embodiment, the gap 11 is configured by the difference between the inner diameter of the first inner peripheral surface 19 and the outer diameter of the second outer peripheral surface 26. However, it is not limited to such a configuration. For example, a groove (not shown) extending in the circumferential direction may be formed in at least one of the first inner peripheral surface 19 and the second outer peripheral surface 26. The axial position of the groove substantially coincides with the first inner opening 22 and the second outer opening 31. This groove constitutes a micro flow path instead of the gap. According to this groove, there is no possibility that the depth of the flow path varies. Thus, since the flow control valve 9 can ensure a minimum flow path without being fully closed, an excessive load is applied to the flow control body 5 and the flow control guide 6 due to a water stop state as in the above-described prior art. Avoided.

  The depth of the groove is preferably 0.05 mm or more and 0.30 mm or less, like the gap 11 described above. If the groove depth is less than 0.05 mm, when the flow regulating valve 9 is adjusted to a position where the first inner opening 22 and the second outer opening 31 do not overlap, a large pressure loss in the gap 11 causes The gap 11 cannot be a flow path and may stop water. Accordingly, the groove depth is more preferably 0.08 mm or more, and particularly preferably 0.10 mm or more. On the other hand, if the groove depth is larger than 0.30 mm, the flow path area becomes large, and it becomes difficult to reduce the minimum flow rate value to a desired level. That is, the flow rate adjustment range which is the performance of the flow control valve 9 is narrowed. Therefore, the groove depth is more preferably 0.20 mm or less, and particularly preferably 0.15 mm or less.

  As described above, the flow control valve 9 is configured to be fully closed, that is, the flow rate cannot be made zero. The flow control valve 9 is configured so that the first inner opening 22 of the flow control valve guide 6 and the second outer opening 31 of the flow control valve body 5 overlap slightly even when the flow rate is set to the minimum. May be configured. However, in the case of such a configuration, the flow rate at the time of setting the minimum flow rate is not reduced, and the flow rate adjustability is lowered. Therefore, the flow control valve 9 is configured such that the first inner opening 22 and the second outer opening 31 do not overlap when the minimum flow rate is set. If the width (angle) at which the openings 22 and 31 do not overlap with each other is small, there is a possibility that the flow valve body 5 and the flow valve guide 6 are worn due to repeated use. In this case, when the mutual positional relationship in the rotation direction changes, the openings 22 and 31 may partially overlap each other. In order to avoid such a situation, the angle β (FIG. 7C) at which the openings 22 and 31 do not overlap is preferably 1 ° or more, more preferably 5 ° or more, and particularly preferably 7 ° or more. On the other hand, if the non-overlapping angle β is too large, the flow path by the gap 11 described above becomes long. As a result, the gap 11 cannot become a flow path due to a large pressure loss, and there is a possibility that the water will stop. Therefore, the angle β at which the openings 22 and 31 do not overlap is preferably 20 ° or less, more preferably 15 ° or less, and particularly preferably 10 ° or less. As shown in FIG. 7C, the non-overlapping angle β in this embodiment is 10 °.

  The O-ring groove 91a formed on the second outer peripheral surface 26 of the second large-diameter portion 25 seals between the first inner peripheral surface 19 of the flow control valve guide 6 (the gap 11) in a liquid-tight manner. Therefore, an O-ring 91 is attached as a seal member. The O-ring 91 extends in the circumferential direction of the second outer peripheral surface 26. That is, it does not extend in the axial direction. The O-ring 91 does not interfere with the first inner opening 22 even by the relative rotation of the flow control valve body 5 and the flow control valve guide 6. Further, no seal member exists in the axial range of the first inner opening 22 and the second outer opening 31 in the gap 11. Therefore, there is no concern about damage to the sealing member or the like and increase in rotational operation load as in the prior art. The axial position of the O-ring 91 is a position closer to the knob portion 24 than the second outer opening 31 and the first inner opening 22. The O-ring 91 allows the liquid in the first large-diameter inner space 18 of the flow control valve guide 6 to pass between the first inner peripheral surface 19 and the second outer peripheral surface 26 toward the knob 24. This is to prevent leakage to the outside.

  A seal member is not provided in a portion of the flow control valve body 5 on the counter-pick portion 24 side (downstream side) from the second hole 30. The liquid outside the second large-diameter portion 25 passes between the first inner peripheral surface 19 and the second outer peripheral surface 26 toward the counter-pick portion 24 side of the second large-diameter portion 25, and the flow control valve The guide 6 can flow into the first small-diameter inner space 14. Even if this cylinder valve 1 is a time when the first inner opening 22 and the second outer opening 31 do not overlap when adjusting the flow rate of the flow regulating body 5, as will be described later, This is because a slight flow path is formed between 22 and the second outer opening 31. Therefore, a seal between the first inner peripheral surface 19 and the second outer peripheral surface 26 is not required downstream of the second hole 30.

  As is apparent from FIG. 8 as well, the inlet side case 3 that constitutes about half of the case 2 has the third small-diameter portion 33 on the upstream side and the third side on the downstream side, each having a substantially cylindrical shape. And a large diameter portion 34. Both the upstream end of the third small diameter portion 33 and the downstream end of the third large diameter portion 34 are opened. At the upstream end of the third large-diameter portion 34, the aforementioned anti-rotation protrusion 44 is formed outward in the radial direction. The third small diameter portion 33 has a cylindrical third small diameter inner peripheral surface 35 on the inner side. The third large-diameter portion 34 has a cylindrical third large-diameter outer peripheral surface 36 on the outside, and a third large-diameter inner peripheral surface 38 that defines a third internal space 37 on the inner side. A flow control valve 9 is inserted toward the upstream side from the opening on the downstream end of the inlet case 3. From the third small diameter portion 33, the knob 24 side portion of the flow regulating valve 5 is protruded to the outside. A circumferential C-ring groove 32 is formed in a portion of the second small diameter portion 29 outside the third small diameter portion 33. A C-ring 97 for preventing the removal is fitted into the groove 32. The outer diameter of the C ring 97 is larger than the inner diameter of the third small diameter portion 33. Accordingly, the C-ring 97 is brought into contact with the upstream end of the third small diameter portion 33, thereby preventing the flow regulating valve body 5 from moving toward the inside of the inlet side case 3. The inner diameter of the third small diameter portion 33 is slightly larger than the outer periphery of the second small diameter portion 29 of the flow regulating valve 5 and smaller than the outer diameter of the second large diameter portion 25. On the inner peripheral side of the third small diameter portion 33, the second small diameter portion 29 penetrates in a relatively rotatable manner. The third large diameter portion 34 is loaded with the first large diameter portion 12 of the flow regulating valve guide 6.

  As shown in FIGS. 2, 6, and 8, the second small diameter portion 29 and the third small diameter portion 33 have a mechanism for defining the maximum rotation operation angle of the flow regulating valve 5 for adjusting the flow rate. Is provided. The operation angle limiting mechanism includes a locking projection 51 of the second small diameter portion 29 and a stopper portion 52 of the third small diameter portion 33 that can be locked to each other. The locking projection 51 protrudes outward in the radial direction on the outer peripheral surface of the second small diameter portion 29 (FIG. 6). The stopper portions 52 are formed on the third small-diameter inner peripheral surface 35 at both ends of the sliding recess 53 for the locking projection 51 (FIG. 8D). In the present embodiment, as described above, the maximum rotation operation angle is 90 °. The sliding recess 53 is formed by cutting a partial annular portion of the third small-diameter inner peripheral surface 35 at an angle obtained by adding an angle corresponding to the width of the locking protrusion 51 to the circumferential direction at 90 °. . The locking projection 51 enters the sliding recess 53, which is the excised part. When the flow regulating body 5 is rotated in this state, the locking projection 51 slides in the sliding recess 53. The locking projection 51 comes into contact with the stopper portion 52 which is the start or end of the sliding recess 53, and the rotation is stopped.

  Since the inlet side case 3 and the flow control valve guide 6 are locked to each other in the circumferential direction, they cannot rotate relative to each other. The specific configuration is as follows. As shown in FIGS. 2, 3, and 5, an annular flange 56 that protrudes radially outward is formed at the downstream end of the first outer surface 17 of the flow control valve guide 6. (FIGS. 2, 3, and 5). A plurality of engagement recesses 57 are formed in the flange portion 56 at intervals in the circumferential direction. On the other hand, at the downstream end of the third large-diameter inner peripheral surface 38 of the inlet side case 3, a plurality of engagement convex portions 58 are formed that protrude inward in the radial direction at intervals in the circumferential direction. (FIG. 2, FIG. 8 (d)). When the first large-diameter portion 12 of the flow control valve guide 6 is inserted into the third large-diameter portion 34, the respective engagement convex portions 58 engage with the corresponding engagement recesses 57, respectively. As a result, the inlet side case 3 and the flow control valve guide 6 cannot be rotated relative to each other.

  With the flow regulating valve 9 inserted in the case 2, the upstream end of the second large diameter portion 25 of the flow regulating valve 5 and the downstream end of the third small diameter portion 33 of the inlet side case 3. By the contact, the flow regulating body 5 can be positioned in the axial direction. The flow valve body 5 can also be positioned in the axial direction by contacting the downstream end of the second large diameter portion 25 and the upstream end of the reducer portion 16 of the flow valve guide 6. However, if positioning is attempted by abutting at two locations, the operational load increases, resulting in poor operability. Therefore, it is preferable to perform positioning only by contacting the upstream end of the second large diameter portion 25 of the flow regulating valve 5 and the downstream end of the third small diameter portion 33 of the inlet case 3. Therefore, it is preferable that the downstream end of the second large diameter portion 25 and the upstream end of the reducer portion 16 of the flow control valve guide 6 be separated from each other. Further, the upstream end of the first large-diameter portion 12 of the flow-regulating valve guide 6 and the downstream end of the third small-diameter portion 33 of the inlet-side case 3 with the flow control valve 9 inserted in the case 2. And / or contact between the flange portion 56 of the flow adjustment valve guide 6 and the downstream end of the third large diameter portion 34 of the inlet case 3, the case 2 of the flow adjustment valve guide 6. Positioning on the upstream side in the axial direction can be performed. Furthermore, the axially downstream positioning of the flow control valve guide 6 with respect to the case 2 can be performed by the contact between the flange 56 and the upstream end of the fourth main body 45 of the outlet side case 4 described later.

  A locking frame 39 is formed at the downstream end of the third large diameter portion 34. The locking frame 39 is formed at two opposing positions across the central axis of the inlet side case 3. This locking frame 39 is for connection with the outlet side case 4. The locking frame 39 is configured to be detachable from a locking portion 46 of the outlet side case 4 described later. As is apparent from FIG. 8B, the locking frame 39 has a U-shaped gate shape protruding toward the outlet side case 4 when the inlet side case 3 is viewed inward in the radial direction. . A central opening 39 a for locking is formed at the center of the locking frame 39. A locking claw 46a of the locking portion 46 described later can be locked in the central opening 39a. Such a locking mechanism is called a snap fit.

  The third large diameter portion 34 communicates with the third internal space 37 and the outside, that is, the third large diameter outer peripheral surface 36 and the third large diameter inner peripheral surface 38 communicate with each other as a third flow path. A hole 40 is formed. In the present embodiment, the circumferential positions of the third hole 40 and the protruding piece 44 are different. However, in FIG. 2, the positions in the circumferential direction of both 40 and 44 are shown to be coincident for easy understanding. An opening of the third hole 40 on the third large diameter outer peripheral surface 36 side constitutes a third outer opening 41, and an opening on the third large diameter inner peripheral surface 38 side constitutes a third inner opening 42. The axial position of the third inner opening 42 substantially coincides with the axial position of the first outer opening 21 of the first hole 20 described above. Further, the circumferential position of the third inner opening 42 also substantially coincides with the circumferential position of the first outer opening 21 of the first hole 20. The number of the third holes 40 may be one, but a plurality of third holes 40 are preferably formed in the circumferential direction. This is because the balance of the radial force due to the pressure of the fluid in the circumferential direction of the inlet side case 3 is easily obtained. From this point of view, the third holes 40 are preferably arranged at equal intervals in the circumferential direction.

  A third groove 43 extending in the circumferential direction is formed in the third large diameter outer peripheral surface 36 of the third large diameter portion 34. The third groove 43 is formed in a range including the third outer opening 41 and the internal flow path of the water supply pipe 102 in the axial direction. In other words, the third outer opening 41 is formed at the bottom of the third groove 43. Further, the third groove 43 may substantially coincide with the position of the internal flow path of the water supply pipe 102 also in the circumferential direction. The third groove 43 constitutes a flow path. The liquid flowing in from the water supply pipe 102 can easily reach each of the plurality of third holes 40 by passing through the third groove 43.

  The O-ring groove 92a formed on the first outer side surface 17 of the flow control valve guide 6 is sealed with a seal member to provide a fluid-tight seal with the third large-diameter inner peripheral surface 38 of the inlet side case 3. An O-ring 92 is attached. The axial positions of the O-ring 92 are positions on both sides in the axial direction of the first groove 23 and the third inner opening 42 of the inlet side case 3. The O-ring 92 allows the liquid outside the first large-diameter portion 12 to pass between the third large-diameter inner peripheral surface 38 and the first outer surface 17 toward the small-diameter portion of the flow control valve guide 6. Then, it passes between the third small-diameter inner peripheral surface 35 and the outer peripheral surface of the second small-diameter portion 29 of the flow control valve body 5 toward the knob 24 side of the flow control valve body 5, and leaks to the outside. This is to prevent this from happening.

  The above-described O-ring 93 is mounted in the O-ring groove 93 a formed in the third large-diameter outer peripheral surface 36 of the inlet side case 3. The axial positions of the O-ring 93 are positions on both sides of the third groove 23 and the internal flow path of the water supply pipe 102 in the axial direction. The O-ring 93 is for preventing the liquid supplied from the water supply pipe 102 from passing between the third large-diameter outer peripheral surface 36 and the inner peripheral surface of the main pipe 101 and leaking outside. is there.

  As shown in FIGS. 1 to 4, the outlet side case 4 includes a fourth main body portion 45 having a substantially cylindrical shape, and a locking portion 46 formed at an upstream end of the fourth main body portion 45. have. The locking portions 46 are formed at two opposing positions across the central axis of the outlet side case 4. The fourth main body 45 has a fourth outer peripheral surface 47 on the outer side, and a cylindrical fourth inner peripheral surface 49 that defines a fourth inner space 48 on the inner side. Both the upstream end and the downstream end of the outlet side case 4 (fourth main body portion 45) are opened.

  The locking portion 46 is for connection with the inlet side case 3. The locking portion 46 is configured to be engageable with and disengageable from the locking frame 39 of the entrance side case 3 described above. As shown in FIGS. 1 to 3, the locking portion 46 includes a locking claw 46 a that is formed on the fourth outer peripheral surface 47 of the outlet side case 4 and projects outward in the radial direction, and a locking claw 46 a. And a peripheral locking groove 46b. When the entrance-side case 3 and the exit-side case 4 are contacted in the axial direction in a state where the locking frame 39 and the locking portion 46 face each other, the locking claw 46a is engaged with the central opening 39a of the locking frame 39. The locking frame 39 gets over the locking claw 46a and fits into the locking groove 46b to be locked. Thereby, the entrance side case 3 and the exit side case 4 are connected. By this connection, the separation and relative rotation between the inlet side case 3 and the outlet side case 4 become impossible.

  As shown in FIGS. 1, 3, and 4, the downstream end of the inlet side case 3 is formed with an engaging protrusion 54 that protrudes downstream with a gap in the circumferential direction. On the other hand, an engagement recess 55 is formed at the upstream end of the outlet side case 4 so as to be cut away toward the downstream side at intervals in the circumferential direction. When the inlet-side case 3 and the outlet-side case 4 are brought into contact with each other in the axial direction in a state where the engaging protrusions 54 and the engaging recesses 55 face each other, the engaging protrusions 54 and the engaging recesses 55 Engage. As a result, the relative rotation between the inlet side case 3 and the outlet side case 4 becomes impossible.

  The fourth main body 45 is formed with a fourth hole 50 for opening to the atmosphere that allows the fourth inner space 48 to communicate with the outside atmosphere. That is, the fourth hole 50 communicates the fourth outer peripheral surface 47 and the fourth inner peripheral surface 49. The position of the fourth hole 50 in the axial direction is a position that roughly corresponds to the internal flow path of the above-described atmosphere communication 103. The fourth hole 50 is for making the fourth internal space 48 an atmospheric open space 60.

  The above-described O-ring 94 is attached to the O-ring groove 94a of the fourth outer peripheral surface 47 of the fourth main body 45 for sealing with the inner peripheral surface of the main pipe 101 described above. The axial direction position of the O-ring 94 is a position downstream of the fourth hole 50. The O-ring 94 passes through the space between the fourth outer peripheral surface 47 and the inner peripheral surface of the main pipe 101 and the liquid on the downstream side in the main pipe 101 passes through the fourth inner space 48 that is the atmosphere open space 60. This is to prevent leakage. As shown in FIGS. 2 and 3, the first small diameter portion 13 and the reducer portion 16 of the flow control valve guide 6 protrude from the fourth inner space 48 of the outlet side case 4, and further, the pressure reducing valve The member 7 and the check valve body 8 are accommodated. The pressure reducing valve member 7 is movable in the axial direction in the fourth inner space 48.

  As is apparent from FIG. 9 as well, the pressure reducing valve member 7 has a bottomed, substantially double cylindrical shape. That is, the pressure reducing valve member 7 includes an outer cylinder part 61 and an inner cylinder part 62 formed coaxially with the outer cylinder part 61. The outer cylinder part 61 and the inner cylinder part 62 are connected by a bottom 63 at the downstream end thereof. The fifth outer space 65 between the outer tube portion 61 and the inner tube portion 62 constitutes a housing space for a coil spring 64 described later.

  As shown in FIG. 2, the inner cylinder portion 62 has a fifth inner peripheral surface 67 that partitions the fifth inner space 66. The first small-diameter portion 13 of the flow control valve guide 6 enters the fifth internal space 66 from the upstream end thereof. As is apparent when referring also to FIG. 9, a boss portion 68 is formed at the center of the bottom portion, which is the downstream end of the fifth internal space 66. Around the boss portion 68, a plurality of window portions 69 are formed to communicate the fifth inner space 66 with the outside on the downstream side. The liquid flowing into the cylinder valve 1 from the aforementioned water supply pipe 102 is the third hole 40, the first hole 20, the second hole 30, the second internal space 27, the first small-diameter internal space 14, the fifth internal space 66, and this. It passes through the window 69 and flows out downstream of the main pipe 101. Among these, the second internal space 27, the first small-diameter internal space 14, and the fifth internal space 66 constitute a central flow path that extends in the axial direction of the cylinder valve 1. The check valve body 8 is mounted in the through hole 68 a of the boss portion 68. The seat surface 8 a of the check valve body 8 faces the upstream side and faces the other seat surface 13 a that is the downstream end of the first small diameter portion 13. When the pressure reducing valve member 7 moves upstream and one seat surface 8a is seated on the other seat surface 13a, the cylinder valve 1 is automatically closed. Even if the check valve body 8 is attached to the boss portion 68 so as to be slightly swingable (pivotable) in all directions in order to effectively sit on the seat surface 13a of the flow control valve guide 6. Good.

  A part of the coil spring 64 is accommodated in the fifth outer space 65. The coil spring 64 is accommodated in a compressed state with the outer surface 12a at the downstream end of the first large diameter portion 12 of the flow regulating valve guide 6 and the bottom 63 of the pressure reducing valve member 7 as spring seats. The pressure reducing valve member 7 is urged in the downstream direction by the coil spring 64. That is, the pressure reducing valve member 7 is biased in the valve opening direction. An annular flange portion 71 protruding inward in the radial direction is formed at the downstream end of the outlet side case 4. Since the downstream end of the pressure reducing valve member 7 is in contact with the flange portion 71, there is no fear that the pressure reducing valve member 7 falls out from the fourth inner space 48 of the outlet side case 4. The space in which the coil spring 64 is accommodated communicates with the atmosphere through the above-described fourth hole 50 for opening to the atmosphere and the atmosphere communication pipe 103. The atmosphere opening space 60 is defined by the outer peripheral surfaces of the first small diameter portion 13 and the reducer portion 16 of the flow control valve guide 6, the fifth outer space 65 of the pressure reducing valve member 7, and the inner peripheral surface of the main pipe 101. Yes.

  In the packing groove 95a of the fifth outer peripheral surface 70 of the outer cylinder portion 61, a V packing 95 as a seal member is provided in order to provide a fluid-tight seal with the fourth inner peripheral surface 49 of the outlet side case 4. It is installed. In the V packing 95, the liquid on the downstream side of the pressure reducing valve member 7 passes between the fifth outer peripheral surface 70 and the fourth inner peripheral surface 49 and leaks into the atmosphere opening space 60 such as the fourth inner space 48. This is to prevent this from happening. In addition, the packing groove 96a of the first small-diameter outer peripheral surface 15 of the first small-diameter portion 13 of the flow regulating valve guide 6 is sealed in a liquid-tight manner with the fifth inner peripheral surface 67 of the pressure reducing valve member 7. Further, a V-packing 96 as a seal member is attached. In the V packing 96, the liquid on the downstream side of the first small-diameter portion 13 passes between the first small-diameter outer peripheral surface 15 and the fifth inner peripheral surface 67, so that the atmosphere open space such as the fourth internal space 48 is provided. This is to prevent leakage to 60. In addition, as these sealing members, the lip packing provided with the lip structure which improved the sealing performance by the high followability at the time of sliding is preferable. Among the lip packings, in particular, the U packing having a U-shaped cross section, the Y packing having a Y-shaped cross section, and / or the V packing having a V-shaped cross section are preferable.

  Below, the material of each component of this cylinder valve 1 is demonstrated. As materials for the inlet side case 3 and the outlet side case 4, metal and synthetic resin can be adopted. A synthetic resin is preferable from the viewpoint of cost reduction. Among the synthetic resins, a thermoplastic resin is more preferable from the viewpoint of productivity. Since the inlet side case 3 and the outlet side case 4 are connected to each other by the locking frame 39 and the locking portion 46, PPS (polyphenylene sulfide), POM (polyacetal), PPS (polyacetal), among thermoplastic resins, from the viewpoint of securing rigidity. It is preferable to use an ABS (acrylonitrile butadiene styrene) resin containing glass fibers. In the present embodiment, POM is adopted for any of the cases 3 and 4.

  Metals and synthetic resins can also be used as the material of the flow regulating valve 5. A synthetic resin is preferable from the viewpoint of cost reduction. Among the synthetic resins, a thermoplastic resin is more preferable from the viewpoint of productivity. Since the flow regulating body 5 is a portion to which the operation dial 98 is fixed, it is necessary to ensure rigidity. From this point of view, it is preferable to use PPS, POM, glass fiber-containing ABS resin, etc. among thermoplastic resins. In this embodiment, glass fiber-containing ABS resin is employed.

  Metal and synthetic resin can also be adopted as the material of the flow control valve guide 6. A synthetic resin is preferable from the viewpoint of cost reduction. Among the synthetic resins, a thermoplastic resin is more preferable from the viewpoint of productivity. Among thermoplastic resins, it is preferable to use an ABS resin from the viewpoint of securing rigidity and reducing costs. In this embodiment, ABS resin is employed.

  As materials for the pressure reducing valve member 7 and the check valve body 8, a metal and a synthetic resin may be employed. A synthetic resin that can be molded lighter than metal is preferable so that the operation of the pressure reducing valve member 7 is less affected by its own weight. Among the synthetic resins, a thermoplastic resin is more preferable from the viewpoint of productivity. Among thermoplastic resins, it is preferable to use an ABS resin from the viewpoint of securing rigidity and reducing costs. In this embodiment, ABS resin is employed.

  As a material for the O-rings 91, 92, 93, 94 and the V packings 95, 96, vulcanized rubber, a thermoplastic elastomer composed of a soft segment and a hard segment, or the like can be adopted. Among these, vulcanized rubber is preferable from the viewpoint of low permanent set due to compression and ensuring durability. Since these O-rings and the like become wetted parts, EPDM having excellent chlorine resistance is more preferable as the equipment rubber.

  As a material of the coil spring 64, a metal and a synthetic resin can be adopted. From the viewpoint of securing rigidity, metal is preferable. In particular, stainless steel is preferable from the viewpoint of corrosion resistance and durability.

  The pressure reducing function, pressure adjusting function, and check function of the pressure reducing valve member 7 and the check valve body 8 will be described below with reference to FIGS. The force for opening the pressure reducing valve member 7 is obtained by adding the spring force F12 of the coil spring 64 to the force F11 caused by the upstream pressure (primary pressure) P1. The spring force F12 increases as the pressure reducing valve member 7 moves in the valve closing direction. On the other hand, the force for closing the pressure reducing valve member 7 is a force F2 due to the downstream pressure (secondary pressure) P2. As shown in FIG. 2, the pressure receiving area of the primary pressure P <b> 1 of the pressure reducing valve member 7 is a portion S <b> 1 excluding the window 69 from the range defined by the fifth inner peripheral surface 67. On the other hand, the pressure receiving area of the secondary pressure P <b> 2 of the pressure reducing valve member 7 is a portion S <b> 2 excluding the window portion 69 from the inner range defined by the fifth outer peripheral surface 70. F11 = P1 × S1 and F2 = P2 × S2.

  The liquid flowing from the water supply pipe 102 through the third hole 40, the first hole 20, and the second hole 30 into the flow regulating valve 9 passes through the first small-diameter inner space 14 and the window 69 and is connected to the main pipe. 101 flows out to the downstream side. Since the flow passage area of the first small diameter portion 13 and the flow passage area of the window portion 69 are relatively large, the pressure loss of the liquid in the window portion 69 when the pressure reducing valve member 7 shown in FIG. Is small. That is, there is almost no difference between the pressure P1 on the upstream side (fifth internal space) of the pressure reducing valve member 7 and the pressure P2 on the downstream side (in the main pipe 101). P1 is approximately equal to P2. The fully open state is a state in which the pressure reducing valve member 7 is in contact with the flange portion 71 of the outlet side case 4. When the liquid pressures P1 and P2 are low, the spring force (F12)> the difference in fluid force (F2-F11), so that the valve opening force (F11 + F12)> the valve closing force (F2). However, when the pressure of the inflowing liquid increases, the difference in fluid force (F2−F11)> spring force (F12) is satisfied, so that the valve closing force (F2)> the valve opening force (F11 + F12), and the pressure reducing valve member 7 is Start moving upstream. That is, the pressure reducing valve member 7 starts to close (FIG. 10B). As a result, the seat surface 8a of the check valve body 8 approaches the seat surface 13a of the flow control valve guide 6, and the flow path therebetween is narrowed. The pressure loss of the liquid passing through this flow path increases and the secondary pressure P2 decreases. This is the pressure reducing function of the pressure reducing valve member 7.

  However, when the secondary pressure P2 decreases, the valve closing force (F2 = P2 × S22) decreases, and the pressure reducing valve member 7 stops the valve closing operation. In this way, even if the primary pressure of the cylinder valve 1 rises, the secondary pressure does not rise above a predetermined pressure. This predetermined pressure can be adjusted by selecting the spring constant of the coil spring 64 and / or changing the ratio between the pressure receiving area S1 of the primary pressure P1 and the pressure receiving area S2 of the secondary pressure P2. This predetermined pressure can be said to be a set pressure. By this adjustment, it is possible to limit the increase in the liquid pressure on the downstream side of the cylinder valve 1. This is a pressure adjustment function of the pressure reducing valve member 7.

  When a valve (not shown) having a discharge water function is connected to the downstream side of the main pipe 101 where the cylinder valve 1 is installed, the check function of the pressure reducing valve member 7 is exhibited. As the valve, a needle valve, a slide valve, a solenoid type stop valve, a spring type stop valve, an open / close valve such as a ball valve, a diaphragm type control valve, or the like is selected. Here, it is simply called an “open / close valve”. In addition, one in which the cylinder valve 1 and the on-off valve are connected to one pipe is referred to as a “water faucet”. When the on-off valve is closed while the liquid is supplied from the water supply pipe 102, the flow of the liquid stops and the pressure of the liquid inside the cylinder valve 1 and the main pipe 101 increases. The primary pressure P1 and the secondary pressure P2 are the same. The pressure reducing valve member 7 starts to close (FIG. 10B). Since the liquid flow is stopped, the secondary pressure P2 does not decrease even if the valve opening of the pressure reducing valve member 7 decreases. When the pressure of the liquid is a predetermined pressure, the seat surface 8a of the check valve body 8 is seated on the seat surface 13a of the first small diameter portion 13 of the flow control valve guide 6, and the pressure reducing valve member 7 is Fully closed (FIG. 10C). The predetermined pressure can be adjusted by selecting the spring constant of the coil spring 64 and / or changing the ratio between the pressure receiving area S1 of the primary pressure P1 and the pressure receiving area S2 of the secondary pressure P2. This predetermined pressure can be said to be a set pressure. This is the check function of the pressure reducing valve member 7.

  By exerting this check function, an increase in pressure on the downstream side of the cylinder valve 1 is prevented. As a result, problems such as damage, functional failure and water leakage caused by high pressure applied to the on-off valve connected to the downstream side of the cylinder valve 1 and / or the connection between the on-off valve and the piping are avoided. sell.

  FIG. 11 shows a hot and cold water mixing plug 81 which is an example of the above-described faucet device. The hot and cold water mixing plug 81 can adjust the mixing ratio of hot water and water and adjust the discharge amount of the mixed liquid. The hot and cold mixing tap 81 is used in, for example, a kitchen, a wash basin, a bathroom, and the like. The hot and cold water mixing plug 81 includes a temperature adjustment valve 82, a flow rate adjustment valve 83, a currant discharge water valve 84, and a shower discharge water valve 85. The temperature adjustment valve 82 and the flow rate adjustment valve 83, and the flow rate adjustment valve 83 and the currant discharge water valve 84 and the shower discharge water valve 85 are connected by a pipe 105. A water supply pipe 106 is connected to the temperature adjustment valve 82 from a cold water source 86, and a hot water supply pipe 107 is connected to the temperature adjustment valve 82. Hot water from the cold water source 86 and the hot water source 87 flows from the temperature adjustment valve 82 to the flow rate adjustment valve 83, and is discharged from the currant discharge water valve 84 and / or the shower discharge water valve 85.

  By operating the dial 82a of the temperature control valve 82, the mixing ratio of hot water and water changes. The temperature of the water can be adjusted by operating the dial 82a. As the flow rate adjusting valve 83, the above-described cylinder valve 1 is employed. Its structure and function are as described above. That is, the flow rate adjusting valve 83 has a flow path at any adjustment position by operation, and does not stop water. However, the flow rate adjusting valve 83 has a check function that automatically closes according to the internal pressure. As the curan stop water valve 84 and the shower stop water valve 85, the above-described needle valves, slide valves, spring stop valves, open / close valves such as ball valves, diaphragm control valves, and the like may be employed. . For the curan stop water valve 84 and the shower stop water valve 85, for example, it is possible to employ a mechanism in which one valve cannot be opened while the other valve is open. Even in such a hot and cold water mixing tap 81, the function of the flow rate adjusting valve 83 (cylinder valve 1) prevents a pressure increase on the downstream side of the flow rate adjusting valve 83. Problems such as damage, functional failure, water leakage, and the like of the water discharge valve 85 and the connecting portions between the pipes 105 and 84, 85 can be avoided.

  In the present application, other inventions different from the invention according to the claims (including independent claims) are also described. Respective forms, members, configurations, and combinations thereof described in the claims and embodiments of the present application are recognized as inventions based on the respective functions and effects.

  Each form, member, configuration, etc. shown in each of the above embodiments is not limited to all of the forms, members, or configurations of these embodiments. It can be applied to all described inventions.

  The cylinder valve according to the present invention can be used in various faucet devices.

DESCRIPTION OF SYMBOLS 1 ... Cylinder valve 2 ... Case 3 ... Inlet side case 4 ... Outlet side case 5 ... Flow control valve body 6 ... Flow control valve guide 7 ... Pressure-reducing valve member 8. ..Check valve body 9 ... Flow control valve 11 ... Gap 12 ... First large diameter portion 13 ... First small diameter portion 14 ... First small diameter internal space 15 ... First Small diameter outer peripheral surface 16 ... Reducer portion 17 ... First outer surface 18 ... First large diameter inner space 19 ... First inner peripheral surface 20 ... First hole 21 ... First outer Opening 22 ... First inner opening 23 ... First groove 24 ... Knob 25 ... Second large diameter part 26 ... Second outer peripheral surface 27 ... Second inner space 28 ... Second inner surface 29: second small diameter portion 30 ... second hole 31 ... second outer opening 32 ... groove for C ring 33 ... third small diameter portion 34 ... third Large diameter part 35 ... Third small diameter inner peripheral surface 36 ... Third large diameter outer peripheral surface 37 ... Third internal space 38 ... Third large diameter inner peripheral surface 39 ... Locking frame 40 ... Third hole 41 ... Third outer opening 42 ... Third inner opening 43 ... Third groove 44 ... Projection piece 45 ... Fourth main body part 46 ... Locking part 47 ... Fourth outer periphery Surface 48 ... Fourth inner space 49 ... Fourth inner peripheral surface 50 ... Fourth hole 51 ... Locking projection 52 ... Stopper portion 53 ... Sliding recess 54 ... Engagement Engagement piece 55 ... engagement recess 56 ... hook part (of flow control valve guide) 57 ... engagement recess 58 (of flow control valve guide) 58 ... engagement (of inlet case) Convex part 60 ... Open space 61 ... Outer cylinder part 62 ... Inner cylinder part 63 ... Bottom part 64 ... Coil spring 65 ... Fifth outer space 66 ... Fifth inner space 67・ ・Fifth inner peripheral surface 68 ... Boss portion 69 ... Window portion 70 ... Fifth outer peripheral surface 71 ... Flange portion 81 ... Hot water mixing tap 82 ... Temperature regulating valve 83 ... Flow rate Adjusting valve 84 ... Callan water stop valve 85 ... Shower water stop valve 86 ... Cold water source 87 ... Hot water source 91, 92, 93, 94 ... O-ring 95, 96 ··· V packing 97 ··· C ring 98 ··· Dials for operation 100 and 105 ··· Piping 101 ··· Main piping 101S ··· (step of main piping) steps 102 and 106 · · · ... Air communication pipe 104 ... End opening 107 (of main pipe) ... Hot water supply pipe

Claims (6)

One or more first first surfaces having a first outer surface on the outside, a cylindrical first inner surface defining a first inner space on the inner side, and communicating the first outer surface and the first inner surface. A flow control guide having holes;
One or more second holes having a cylindrical second outer peripheral surface on the outer side, a second inner side surface defining a second inner space on the inner side, and communicating the second outer peripheral surface and the second inner side surface. A flow control body having ,
A central flow path communicating with the second internal space and the outside of the flow regulating valve, and extending in the axial direction of the second internal space;
A pressure reducing valve member arranged in the central flow path and movable in the axial direction .
At least a part of the flow regulating body is inserted into the first internal space of the flow regulating guide,
One of the flow control valve guide and the flow control valve body is rotated relative to the other to adjust the overlap area of the first hole and the second hole, thereby adjusting the flow control guide. The flow rate of the liquid flowing between the outside of the flow control valve and the second internal space of the flow control valve body is adjusted ,
At any rotational position of the relative rotation, a flow path through which liquid can flow between the first hole and the second hole is formed ,
The liquid is configured to flow in from the first inner opening constituting the opening on the first inner peripheral surface side of the first hole, and to flow out to the side opposite to the second inner space of the central flow path . Cylinder valve. By the relative rotation, and the first inner opening, and a second outer opening which constitutes the opening of the second outer peripheral surface side of the second hole, it can be a state of not overlapping,
In this state, there is a gap between the first inner peripheral surface and the second outer peripheral surface from the first inner opening to the second outer opening, and this gap constitutes the flow path. Cylinder valve as described. Between upper Kisuki, and the annular sealing member for sealing liquid-tightly fitted to the gap,
The seal member is not disposed on the downstream side of the first hole and the second hole in the axial direction , is disposed on the opposite side to the downstream side , and extends in the rotation direction of the relative rotation. And
The cylinder valve according to claim 2, wherein no seal member is present in an axial range of the first inner opening and the second outer opening in the gap. The cylinder valve according to any one of claims 1 to 3, wherein the pressure reducing valve member is configured to move in a direction to close the central flow path when the downstream pressure of the pressure reducing valve member becomes higher than a set pressure. 4. The pressure-reducing valve member is configured to move in a direction in which the flow path area of the central flow path is reduced as the downstream pressure of the pressure-reducing valve member increases. 5. Cylinder valve. A liquid amount adjusting cylinder valve installed in the liquid flow path and capable of adjusting the liquid amount;
A faucet device provided on the downstream side of the flow rate adjusting cylinder valve in the liquid flow path and having a water stop / water flow switching mechanism capable of opening and closing,
A faucet device in which the liquid amount adjusting cylinder valve is constituted by the cylinder valve according to any one of claims 1 to 5 .

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